Brake-shoe.



I H. JONES.

BRAKE SHOE.

APPLICATION FILED APR. 28, I9I6.

Patented Oct. 24, 1916.

HARRY JONES, OF SUFFJERN, NEW YORK, ASSKGNOR TO AMERGAN BRAKE. SHGE'LFOUNDRY COMPANY, OF MAHWAH, NEW JERSEY, A. CORPRATQIN F NEWT JBRAKE-SHOE.

Specification of Letters Patent. f

Application led Apr128, 1916. Serial No. 94,090.

To all whom it may concern."

Be it known that l, HARRY JONES, a citizen of the United States, and aresident of Suffer-n, in the county of Rockland and Stat/e of New York,have made and invented certain new and useful Improvements in Brake-Shoes, of which the following is a specification.

My invention relates t0 brake shoes, and particularly to that typewherein the serviceable life and wear-resisting properties of the shoeare increased and lengthened by the presence of localized inserts ofhard steel, the body of the shoe being reinforced throughout by thepresence of openwork ductile metal. rllhis type of shoe, as soconstructed, involves several molding operations, and considerable laborin its manufacture, and in addition, the localized inserts of hard steeloftentimes become highly heated in service and the wearing properties ofsuch inserts or sections impaired or destroyed.

It is therefore an object of the present invention to provide a brakeshoe having one or more inserts composed of hard wear-resisting steeland openwork ductile metal, the hard steel and ductile metalbeingxjoined together in a unitary structure, and preferably in the formof a netting, extending throughout substantially the entire body of theshoe. The ductile metal portion of the insert reinforces and tiestogether the body Y of the4 shoe, and the uniform and widely distributedcharacter ofthe hard wear-resisting steel, prevents the excessiveheating of the shoe at any one point or locality, and provides for theeven, uniform and slow wear thereof. By forming the insert of hardwear-resisting steel and of ductile metal, and combining the two in aunitary structure, the requisite frictional and wearresisting propertiesare obtained, and a shoe in provided which may be economically andeasily manufactured, involving but little labor and requiring but onemolding opera tion for its production.

A. further object is to provide a brake shoe insert composed ofsuperposed layers of openworlr or expanded metal, held together in aunitary mass by the presence of a coating of hard wear-resisting steel.the hardness of the wear-resisting steel being increased by the chillresulting from depositing it upon the cold ductile metal when in ahighly heated condition.

@ther objects and advantages will further appear.

The preferred embodiment of my invention is disclosed in theaccompanying drawings, wherein:

Figure l is a view in top plan of a brake slice embodying thecharacteristic features of my invention, portions of the shoe beingbroken away and represented in section; Fig. 2 is a fragmental view inperspective of the foregoing; Fig. 3 is a view in side elevation, andpartially in section, of my improved brake shoe; Fig. 4C is a view inlend section, of an insert composed of two superposed layers of expandedductile metal, upon and around which the hard wear-resisting steel isdeposited; Fig. 5 is a view in top plan of an insert with portions ofthe hard steel coating removed from the ductile metal netting.

Referring specifically to the several views, the insert is preferablycomposed of a bundle of superposed layers of openwork or expanded metall0, preferably formed of ductile or nielleable steel. A coating of hardwear-resisting steel l1 is formed upon the openwork metal and ties andbinds the sev eral layers thereof together, so that the insert is in theform ofa unitary structure, as shown in Figs. 2 and ll, and may behandled and arranged within a brake shoe mold without difficulty, andwithout the usual assembling and wiring operations fitti necessary tomaintain localized inserts and MPU rllhe exact Inumber of layers ofexpanded l metal l0 may be varied, the insert disclosed in Figs. 2 and 3being formed of four such layers, the insert disclosed yin Fig. t beingcomposed of two layers, and the insert illustrated in Fig. 5 consistingof but a single layer. The amount of hard wearresisting steel deposited.upon the strands of lll@ the ductile netting' may also' be varied, ty

capable of reinforcing and tying together the shoe body. What- I claimis-:- 1. A brake shoe insert consisting of a netting. of connected andinterlaced strands of hard Wear-resisting steel.

2. A brake shoe insert comprising a re-y inforcing member of openworkductile metal, and a coating of hard steel carried by said reinforcingmember.

3. A brake shoe insert comprising layers of openwork ductile metal, anda coating of hard 'steel surrounding the strands of said openwork metal.

4. A brake shoe insert comprising vsuperposed layers of openwork ductilemetal, 'and a coating of hard steel surrounding the strands of saidopenwork metal and tying and binding the layers thereof together.

5. A brake shoe insert comprising a bundle of openwork ductile metal,and a coating of hard vchilled steel upon the strands of said ductilemetal.

6. A brake shoe comprising a cast metal body, and a netting of hardsteel incor- Work ductile metal, with a coating of hard steel thereon.

9. A brake shoe comprising a cast metal body, a reinforcing membertherein formed of a bundle of openwork ductile metal, and a coating ofhard steel upon the strands of said openwork ductile metal.

10. A brake shoe comprising a cast metal body, an insert incorporatedtherein and formed of a bundle of openwork ductile metal, and a coatingof hard chilled steel carried by the bundle of openwork ductile metal.

Signed at Sufern, in the county of Rockland and State of New York, this26th day of April, A. D. 1916.

HARRY JONES.

Witnesses:

CHARLES N. WINTER, WALLACE SUTHERLAND.

